This. Focus on the fundamentals of shooting and shoot some larger samples to get an indication of what the system will do repeatedly before you start screwing with things or plugging in ballistic info. And if you find yourself chasing your tail once you start making adjustments, you might consider yanking those VX's and swapping them for something more reliable. They are a weak link in both of those systems.That's the minimum.
@mww982 read this, https://rokslide.com/forums/threads...ice-posts-and-rifle-practice-shooting.165291/
...and then go practice. You don't need to go on a wild goose chase of constant equipment changes while working on eliminating yourself as the weakest link in the shooting system.